Fluid controlled winch



June 6, 1950 B. BRITT 2,510,619

FLUID CONTROLLED WINCH Filed March 1 1945 s Sheets-Sheet 1 FIG.\.

2 G P /5 Q /6 a 5 INVENTOR= ANT L. BRITT BY F y-1 ATTORNEY.

FLUID CONTROLLED WINCH ATTORNEY.

June 6, 1950 B. L. BRITT FLUID CONTROLLED WINCH 3 SheetsSheet 5 Filed March 1, 1945 INVENTOR= BFZWT L. BRITT \(W ATTORNEY.

Patented June 6, 1950 Lpui'spMos, at

outpotatio iofiDeiawarel i lifhtilfn.iiiflmhL1 945i$ ilNQ 3 ,3733 W Y 5 cmmsb (01,25481833 V A- further 'bbject b he-ihvr'i'tio'n is -tdpi'ovidea-w-ir'ieh-in which th'evp'iutoh and bhalgzeyn'ieohan is'm each---compris'e-- stamiardized hydreuhc brake constructions.

A still further object v-ide 'a winch-having" which extends :su-beta the; ehti re l'en' thwo f-w? the-mechanism n6. asthe-"ciut thd br he device's" oppositely ois osea within-the length at 1 thew-inch :per s. 7

Still anothi ob'j''ct tif the-i-nvehtibiiis to pmvide'i'a'iwinchzhavinigi raulica lly operated-brake unit's; filmction-in'g. iashrakeand clutch eleme ts, each unit disposed within the length of th' in'c'hand individually seleetivelyoperable to caus the Winding drum to beiivotated or :stopped depndiiig upon which 2 Set of brake: elements is operative.

Another and-still'f urther object of the invention is to. provide a ,winch-onstruction in: which, the wifiding: feel. or. drum :1 has Sits motio n contro11ed' by two "sets. of .hydraulioally: actuated brake: e'ie' 1 ments, one s'etsof whichifhnction's as a-olute'h and 'theJothervs'et iof whi'ch-afuh'etiohs as-a'brake both operative on thetinterior 51111266 of. the wihdi ng" the'finvent'ion is torp ih'g drum thereon V drum.

in-gudralwing's', sets; forth preferred embodiment ofxthe invntiohbut sd iclo'sure -ishot'tobe -construed as a limitation-of the invention which is limited: only by. theaaibpended claimspanq any and all modifications, al teTatioris'and variations oistructurecoming \rkithi-ii the spirit and scope thereof are. deemed.tob'eginoluded:hi'eir In-thetrlrawings: I 4 Figure 1, isran.hdzilt htibh'viwiewoi the or i which the 'c'a by-ahprbximeitei oried--Without-i e s i i tn t 'i 'iah-tityof mate n constructio e t e ana the Yak e" C0 tiilctiofi'ut'iliz i and uprights 2 and 3 if desired. Ring element 13 is intended to function as a thrust member and a similar construction can be provided between 'fiange H and upright 3. Gear 12 meshes with idler pinion I4 journaled on an appropriate pin I 5 fixed to upright 2. Pinion l5 meshes with another pinion l6 secured to the armature shaft of motor [1. It is clear from the foregoing, therefore, that shaft It is rotated by motor I! through the several gear elements described. Suitable lubricant retainers l8 and I9 are provided in the several sleeve constructions that also serve as aids in keeping shaft H1 properly centered with respect to sleeves 6 and 8.

The winding drum or reel '20, which is disposed between uprights 2 and 3, is rotated in. suitable bearing elements 2| and 22. These bearing elements are preferably in the form of large rings secured to uprights 2 and 3 as particularly shown in section in Figure 3. The winding reel 20 comprises a cylinder 23, the ends of which are received in the ring bearings 21 and 22. The sleeve element 23 has collars 24 and 25 thereon so positioned that they are adjacent bearing elements 2| and 22 and further arranged such that there is a minimum of end play between the bearing elements and collars 24 and 25. If necessary, appropriate thrust bearing elements may be inserted in the slots 25 and 21 which may be of wellknown construction. The cable 28, which is shown wound on reel or drum 20, is conventional in the art.

The braking of the winding reel is accomplished by a pair of brake assemblies each comprising a pair of shoes 29 and 30 customarily used in automotive type vehicles and preferably hydraulically actuated by means of a brake cylinder 3| having a pair of pistons (not shown) arranged therein whose rods engage the ends of the brake shoes. The other ends of the brake shoes are pivoted on anchor pins 32 secured to the backing plate 33, which backing plate is fixed to a collar 34 integrally associated with sleeve 8. A plurality of cap screws 35 secure the backing plates 33 to the two collars 34. The brake cylinders 3| are received in appropriate recesses in the backing plate and only a single anchor pin 32 is shown for reasons of simplicity. Other types of brake assemblies may be employed with equal facility.

Pressure fluid for actuating the pistons in the brake cylinders is derived from a master cylinder or compensator 36 arranged somewhere near or adjacent the operators station and pressure fluid generated by the master cylinder upon action of pedal 3? is conducted through conduit 38 into a second conduit 39 fixed in upright 3 and is thence conducted to a fitting 40 and by means of conduits 4! and 42 is then conducted to the brake cylinders 3|. The master cylinders may be of the type set forth in United States Patent No. 1,758,871, issued May 13, 1930, which shows a construction Well known in the art. The brake surface with which shoes 29 and 3.0 engage is formed on the interior surface of cylinder 23 of the drum or reel 20. The operation of these brakes is the same as in the automotive art which is believed to be well known to the hoisting art.

The power output of motor or prime mover H is supplied to reel 2i] through the gear train l2, l4, and [6 from shaft l6 through a clutch which is made up of a dual clutch shoe assembly. Shaft [0 has an enlargement 43 thereon, disposed in the space between the ends of sleeves 6 and B interior-1y of reel 20, to which a pair of backing plates or supports 44 and 45. are secured by means of a plurality of cap screws 46 and. 41. Each set of clutches comprises a pair of clutch shoes 48 and 49 which are anchored to the backing plate by means of a pin 50 and hinged thereto in a conventional manner. A clutch motor 5| is disposed between the ends of clutch shoes 48 and 49 to force them into engagement with cylinder 23 of reel 28. The pistons (not shown) are arranged within clutch cylinder 5|, the rods of which pistons engage the ends of clutch shoes 48 and 49 in a well-known manner. The clutch shoes pivot about the anchor pin 50 and upon the energization of the motor 5|, may engage the interior of the cylindrical element 23.

Pressure fluid admitted to motors 5| is derived from a master cylinder or compensator '52 actuated by the pedal device 53. The pressure fluid generated thereby is conducted through conduit 54 thence through conduit 55 into a hydraulic coupling 56. The coupling is necessary for the reason that shaft l0 and gear l2 must rotate with respect to conduit 55 and the parts associated therewith. Coupling 56 may be of any construction well known in the art or as illustrated and pressure fluid therefrom is conducted through conduit 5'! into a fitting '58, thence through a duct 59 formed in the enlargement or collar 43 and then into a fitting 60 and thereafter by means of conduits El and 62 into the clutch cylinders 51. In view of the fact that clutch shoes 48 and 49 are secured to shaft I0, they will, when brought into engagement with the interior surface of the cylinder 23 of reel 20, cause the reel to rotate. Compensators 52 and 36 are preferably disposed adjacent the operators station so he will be able to suitably control the operation of brakes 29 and 30 which will arrest rotation of reel 20 or he can operate clutch shoes 48 and 49 with equal facility and cause them to perform as a clutch to rotate reel 20 from prime mover or motor IT.

From the foregoing description and disclosure it is clear that a winch has been provided which employs standard automotive type brake equipment so constructed and arranged as to enable one set of shoes to be employed as a brake and the other set of shoes to be employed as a clutch. The operation and construction of the foregoing device is thought to be clear from the disclosure to enable anyone skilled in the art to practice the invention.

Having fully described my invention, that which I claim as novel and desire to protect by Letters Patent of the United States is:

1. In a winch, a pair of uprights; a winding reel provided with an interior cylindrical surface; means to journal said winding reel on said upright; a shaft; means to journal said shaft in said uprights which comprises a pair of sleeve members each of which is secured to one of said uprights; means to rotate said shaft; a plurality of brake elements mounted on one of said sleeve members and engageable with the interior cylindrical surface of said winding reel to arrest rotation thereof; means to actuate said brake elements; a clutch comprising a pair of clutch elements mounted on said shaft engageable with the interior cylindrical surface of said winding reel; and means to actuate said clutch elements to enable the rotative motion of said shaft to be trans mitted to said Winding reel.

2. In a winch, a pair of uprights; a sleeve secured to each of said uprights; a shaft rotatably mounted in said sleeves; means to rotate said shaft; a Winding reel rotatably mounted on said uprights; a brake secured to one of said sleeves and engageable with said reel; means to actuate said brake to arrest or prevent motion in said reel; a clutch comprising a pair of clutch shoes secured to said shaft and engageable with said reel; and means to actuate said clutch shoes.

3. In a winch, a pair of uprights; a sleeve secured to each upright; a shaft journaled in said sleeves; means to rotate said shaft; a winding reel provided with an interior surface and rotatably mounted on said uprights; a brake comprising a plurality of shoes mounted on one of said sleeves engageable with the interior surface of said reel; means to actuate said brake shoes to bring said shoes into engagement with the interior surface of said reel to arrest or prevent motion of said drum; a clutch comprising a plurality of clutch shoes mounted on said shaft engageable with the interior surface of said reel; and means to actuate said clutch shoes into engagement with said reel interior surface to cause said reel to be rotated by said shaft.

4. In a winch, a pair of uprights; means to journal a winding reel on said uprights; a shaft rotatably mounted in said uprights; a sleeve secured to one of said uprights and receiving said shaft; means to rotate said shaft; a brake mechanism associated with said sleeve and engageable with said reel to arrest or prevent rotative motion of said reel; means to actuate said brake mechanism; a clutch comprising a plurality of clutch shoes mounted on said shaft; and means to actuate said clutch shoes to bring them into engagement with said drum.

5. Irra winch, a pair of uprights; means to journal a winding reel on said uprights; a, shaft; means to rotate said shaft; sleeve elements in said uprights to receive said shaft; a brake mechanism mounted on one of said sleeves and engageable with said reel; hydraulic means to actuate said brake mechanism to arrest or prevent rotative motion in said reel; a clutch comprising a pair of clutch shoes secured to said shaft; hydraulic means to actuate said clutch to bring said clutch shoes into engagement with said reel in order to rotate said reel.

BRYANT L. BRITT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 95,837 Reamey Oct. 12, 1869 1,165,814 Tadey Dec. 28, 1915 1,445,151 Mercer Feb. 13, 1923 1,445,152 Mercer Feb. 13, 1923 1,672,323 Kellenberger June 5, 1928 1,924,391 Bardon et al Aug. 29, 1933 2,159,137 Doty May 23, 1939 

